Do you know what purity and purity on the seed mean?

Abstract: do you know what the purity and cleanliness on the seed packaging mean?

After we have bought the seeds, we can see that the purity and purity of the seeds are clearly marked by looking at the bags carefully. Now it's the busy autumn season again, and it's time for farmers to get ready to buy seeds. Perhaps everyone is not very clear about the purity and purity of seeds. Here, let's make an introduction to the development of agriculture through science.

Seed purity this is a statistic of genotypic consistency among seeds, and seed cleanliness selection is a statistic to evaluate seed cleanliness. The two are completely different concepts, and sometimes people may think that purity means purity, but there is obviously a misunderstanding, and there is a clear distinction between the two in seeds.

The purity of seeds requires that the country has clear regulations, which must reach more than 96% (including). In many cases, people do not have a good idea of the concept of purity. To put it bluntly, purity represents the consistency of crop phenotypes in the field.

Generally speaking, seeds are not easily mixed even if they are mixed, but sometimes, such as seeds of other varieties, it will have a certain impact on the yield and the quality of crops harvested by future generations.

To take a small example, in the past, when growing wheat at home, it was always found mixed with barley plants in the wheat field, which was particularly conspicuous in the wheat field. This is not to say that barley is not good or that barley is not wheat. But allowing the existence of barley to compete with wheat in the field is also not conducive to the establishment of population structure. And it will also lead to the harvest of wheat mixed with barley, resulting in a decline in quality. This is what we can see with our eyes, but if mixed with common wheat, molecular methods are needed for purity identification.

Like the above situation is good, at least the field did not cause a significant reduction in yield, but for hybrids once the purity decline of this loss can be a bit big. We should know that at present, rice is basically produced by three lines, that is, male sterile lines, maintainer lines and restorer lines, but we should understand that because hybrids are crossed through male sterile lines and restorer lines, once the purity is not enough, that is, the emergence of a small amount of pollen in male sterile lines due to weather factors will lead to self-pollination. In this case, when farmers buy seeds with low purity, the yield will be reduced due to the emergence of a large number of sterile plants in the field. Resulting in agricultural economic losses.

For seeds with a purity of 96% or 98%, there is not much difference in nature, and the performance in farmland is actually very difficult to distinguish, because the difference is very small. Therefore, the field growth uniformity of seeds with higher seed purity will be more consistent.

Here is science to promote agriculture, with you to grow knowledge.